package com.ruoyi.framework.web.service;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.enums.UserStatus;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.system.service.ISysUserService;

import javax.annotation.Resource;

/**
 * 用户验证处理
 *
 * @author ruoyi
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService
{
    private static final Logger log = LoggerFactory.getLogger(UserDetailsServiceImpl.class);

    @Resource
    private ISysUserService userService;

    @Resource
    private SysPasswordService passwordService;

    @Resource
//    private SysPermissionService permissionService;

    /**
     * 认证通过后会将该UserDetails赋给认证通过的Authentication的principal，然后再把该Authentication存入到SecurityContext中。
     * 之后如果需要使用用户信息的时候就是通过SecurityContextHolder获取存放在SecurityContext中的Authentication的principal。
     */
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException
    {
        SysUser user = userService.selectUserByUserName(username);
        if (StringUtils.isNull(user))
        {
            log.info("登录用户：{} 不存在.", username);
            throw new ServiceException("登录用户：" + username + " 不存在");
        }
        else if (UserStatus.DELETED.getCode().equals(user.getDelFlag()))
        {
            log.info("登录用户：{} 已被删除.", username);
            throw new ServiceException("对不起，您的账号：" + username + " 已被删除");
        }
        else if (UserStatus.DISABLE.getCode().equals(user.getStatus()))
        {
            log.info("登录用户：{} 已被停用.", username);
            throw new ServiceException("对不起，您的账号：" + username + " 已停用");
        }

        passwordService.validate(user);  // 如果这个语句没有异常 说明密码就是正确的  ，如果有异常 已向上抛出   validate是验证的意思

        return createLoginUser(user);   // 返回一个loginUser对象
    }

    public UserDetails createLoginUser(SysUser user)
    {
//        return new LoginUser(user.getUserId(), user.getDeptId(), user, permissionService.getMenuPermission(user)); // 角色拥有的菜单
        return new LoginUser(user.getUserId(), user.getDeptId(), user,null);
    }
}
